I guess all that I would have wanted to say about this card has already been said. In the traditional Lovers there´s often some kind of choice to be made but here it has been made long ago.Yes..Love remains, beyond the grave.
Somehow this card (any many others in this deck) remind me of the eternal cycling of matter in Nature. There are lovers and skeletons, and they transform into each other in those continuous eternal cycles. The bodies and skeletons turn into new biomass which emerges from the vaults and is transformed into new lovers. I think it is very beautiful. This biomass (that we all are) is sort of "undead" stuff, because it is able to transform into almost anything else.